try {
  const newUser = new User({
    'email': req.body.email,
    'name': req.body.name
  });
  console.log('before save');
  let saveUser = await newUser.save(); //when fail its goes to catch
  console.log(saveUser); //when success it print.
  console.log('after save');
} catch (err) {
  console.log('err' + err);
  res.status(500).send(err);
}